August weather forecast
Du Bois, IL

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Weather in August

The last month of the summer, August, is another warm month in Du Bois, Illinois, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 66°F (18.9°C).

Temperature

As August takes its course, Du Bois's average high-temperature registers at a moderately hot 84.4°F (29.1°C), closely aligning with the preceding month. August nights observe an average temperature dip to a refreshing 66°F (18.9°C).

Heat index

The heat index value for August is evaluated at a torrid 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Be advised, the heat index considers values for conditions in shade and with a light breeze. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. It is essential to realize that direct sunlight can escalate the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Under conditions of increased relative humidity, the evaporation rate lessens, causing the body to retain more heat than under less humid conditions. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Du Bois, the average relative humidity in August is 79%.

Rainfall

In Du Bois, during August, the rain falls for 15.4 days and regularly aggregates up to 3.31" (84mm) of precipitation. In Du Bois, during the entire year, the rain falls for 166.8 days and collects up to 37.83" (961mm) of precipitation.

Snowfall

In Du Bois, snow does not fall in May through August and October.

Daylight

The average length of the day in August is 13h and 36min.
On the first day of the month, sunrise is at 6:00 am and sunset at 8:06 pm. On the last day of August, sunrise is at 6:26 am and sunset at 7:27 pm CDT.

Sunshine

In Du Bois, the average sunshine in August is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot during August?

In Du Bois, in August, the average high-temperature is 84.4°F (29.1°C), and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is evaluated at 95°F (35°C).

What is the average humidity in August?

In August, the average relative humidity is 79%.

How many days does it rain in August?

In Du Bois, in August, during 15.4 rainfall days, 3.31" (84mm) of precipitation is typically accumulated.

When it does not snow in Du Bois?

In Du Bois, snow does not fall in May through August and October.

Does it snow in August?

In Du Bois, Illinois, in August, it doesn't snow. In September, it regularly snows.

How many hours of daylight does Du Bois have in August?

In Du Bois, the average day length in August is 13h and 36min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:00 am and sunset at 8:06 pm. On the last day of the month, sunrise is at 6:26 am and sunset at 7:27 pm CDT.

How many hours of sunshine does Du Bois have in August?

In Du Bois, the average sunshine duration in August is 10.1h.

What are the months with the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August?

The average daily maximum UV index in August in Du Bois is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Du Bois, IL

Average temperature in August - Du Bois, IL
  • Average high temperature in August: 84.4°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in August
Du Bois, IL

Average pressure in August - Du Bois, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Du Bois, IL

Average wind speed in August - Du Bois, IL
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in August
Du Bois, IL

Average humidity in August - Du Bois, IL
  • Average humidity in August: 79%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Du Bois, IL

Average rainfall in August - Du Bois, IL
  • Average rainfall in August: 3.31"

The wettest month (with the highest rainfall) is April (4.45").
The driest month (with the least rainfall) is February (2.01").

Average rainfall days in August
Du Bois, IL

Average rainfall days in August - Du Bois, IL
  • Average rainfall days in August: 15.4 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is December (9.2 days).

Average snowfall in August
Du Bois, IL

Average snowfall in August - Du Bois, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and October (0").

Average snowfall days in August
Du Bois, IL

Average snowfall days in August - Du Bois, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.3 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight in August /
Average sunshine in August
Du Bois, IL

Average daylight in August / Average sunshine in August - Du Bois, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days in August
Du Bois, IL

Average sunshine days in August - Du Bois, IL
  • Average sunshine days in August: 12 days

The months with the most sunshine days are October and November (17.5 days).
The month with the least sunshine days is May (9.3 days).

Average UV index in August
Du Bois, IL

Average UV index in August - Du Bois, IL
  • Average UV index in August: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover in August
Du Bois, IL

Average cloud cover in August - Du Bois, IL
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in August
Du Bois, IL

Average visibility in August - Du Bois, IL
  • Average visibility in August: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Du Bois, Illinois, USA

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